swDataBuffer_trunk * swDataBuffer_newTrunk(swDataBuffer *data_buffer, swDataBuffer_item *item)
{
swDataBuffer_trunk *trunk = sw_malloc(sizeof(swDataBuffer_trunk));
if (trunk == NULL)
{
swWarn("malloc for trunk failed. Error: %s[%d]", strerror(errno), errno);
return NULL;
}
char *buf = sw_malloc(data_buffer->trunk_size);
if (buf == NULL)
{
swWarn("malloc for data failed. Error: %s[%d]", strerror(errno), errno);
sw_free(trunk);
return NULL;
}
bzero(trunk, sizeof(swDataBuffer_trunk));
trunk->data = buf;
item->trunk_num++;
if(item->head == NULL)
{
item->tail = item->head = trunk;
}
else
{
item->tail->next = trunk;
item->tail = trunk;
}
return trunk;
}
swRbtree* swRbtree_new()
{
swRbtree *rbtree = sw_malloc(sizeof(swRbtree));
swRbtree_node *sentinel = sw_malloc(sizeof(swRbtree_node));
sentinel->color = 0;
rbtree->root = sentinel;
rbtree->sentinel = sentinel;
return rbtree;
}
int swAio_dispatch(swAio_event *_event)
{
if (SwooleAIO.init == 0)
{
swAio_init();
}
_event->task_id = SwooleAIO.current_id++;
swAio_event *event = (swAio_event *) sw_malloc(sizeof(swAio_event));
if (event == NULL)
{
swWarn("malloc failed");
return SW_ERR;
}
memcpy(event, _event, sizeof(swAio_event));
if (swThreadPool_dispatch(&pool, event, sizeof(event)) < 0)
{
return SW_ERR;
}
else
{
SwooleAIO.task_num++;
return _event->task_id;
}
}
static void swTable_compress_list(swTable *table)
{
table->lock.lock(&table->lock);
swTableRow **tmp = sw_malloc(sizeof(swTableRow *) * table->size);
if (!tmp)
{
swWarn("malloc() failed, cannot compress the jump table.");
goto unlock;
}
int i, tmp_i = 0;
for (i = 0; i < table->list_n; i++)
{
if (table->rows_list[i] != NULL)
{
tmp[tmp_i] = table->rows_list[i];
tmp[tmp_i]->list_index = tmp_i;
tmp_i++;
}
}
memcpy(table->rows_list, tmp, sizeof(swTableRow *) * tmp_i);
sw_free(tmp);
table->list_n = tmp_i;
unlock: table->lock.unlock(&table->lock);
}
swMemoryPool *swRingBuffer_new(uint32_t size, uint8_t shared)
{
void *mem = (shared == 1) ? sw_shm_malloc(size) : sw_malloc(size);
if (mem == NULL)
{
swWarn("malloc(%d) failed.", size);
return NULL;
}
swRingBuffer *object = mem;
mem = (char *) mem + sizeof(swRingBuffer);
bzero(object, sizeof(swRingBuffer));
object->size = (size - sizeof(swRingBuffer) - sizeof(swMemoryPool));
object->shared = shared;
swMemoryPool *pool = mem;
mem = (char *) mem + sizeof(swMemoryPool);
pool->object = object;
pool->destroy = swRingBuffer_destory;
pool->free = swRingBuffer_free;
pool->alloc = swRingBuffer_alloc;
object->memory = mem;
swDebug("memory: ptr=%p", mem);
return pool;
}
static int swAioBase_read(int fd, void *inbuf, size_t size, off_t offset)
{
swAio_event *aio_ev = (swAio_event *) sw_malloc(sizeof(swAio_event));
if (aio_ev == NULL)
{
swWarn("malloc failed.");
return SW_ERR;
}
bzero(aio_ev, sizeof(swAio_event));
aio_ev->fd = fd;
aio_ev->buf = inbuf;
aio_ev->type = SW_AIO_READ;
aio_ev->nbytes = size;
aio_ev->offset = offset;
aio_ev->task_id = SwooleAIO.current_id++;
if (swThreadPool_dispatch(&swAioBase_thread_pool, aio_ev, sizeof(aio_ev)) < 0)
{
return SW_ERR;
}
else
{
SwooleAIO.task_num++;
return aio_ev->task_id;
}
}
int swReactorEpoll_create(swReactor *reactor, int max_event_num)
{
//create reactor object
swReactorEpoll *reactor_object = sw_malloc(sizeof(swReactorEpoll));
if (reactor_object == NULL)
{
swWarn("malloc[0] fail\n");
return SW_ERR;
}
reactor->object = reactor_object;
reactor_object->events = sw_calloc(max_event_num, sizeof(struct epoll_event));
if (reactor_object->events == NULL)
{
swWarn("malloc[1] fail\n");
return SW_ERR;
}
//epoll create
reactor_object->event_max = 0;
reactor_object->epfd = epoll_create(512);
if (reactor_object->epfd < 0)
{
swWarn("epoll_create fail.Error: %s[%d]", strerror(errno), errno);
return SW_ERR;
}
//binding method
reactor->add = swReactorEpoll_add;
reactor->set = swReactorEpoll_set;
reactor->del = swReactorEpoll_del;
reactor->wait = swReactorEpoll_wait;
reactor->free = swReactorEpoll_free;
reactor->setHandle = swReactor_setHandle;
return SW_OK;
}
long swTimer_addtimeout(swTimer *timer, int timeout_ms, void *data)
{
int new_interval = swoole_common_divisor(timeout_ms, timer->interval);
if (new_interval < timer->interval)
{
swTimer_set(timer, new_interval);
timer->interval = new_interval;
}
struct timeval now;
if (gettimeofday(&now, NULL) < 0)
{
swWarn("gettimeofday() failed. Error: %s[%d]", strerror(errno), errno);
return SW_ERR;
}
uint32_t now_ms = now.tv_sec * 1000 + now.tv_usec / 1000;
swTimer_node *node = sw_malloc(sizeof(swTimer_node));
if (node == NULL)
{
swWarn("malloc(%d) failed. Error: %s[%d]", (int ) sizeof(swTimer_node), strerror(errno), errno);
return SW_ERR;
}
bzero(node, sizeof(swTimer_node));
node->data = data;
node->exec_msec = now_ms + timeout_ms;
node->id = timer->_next_id++;
swTimer_node_insert(&timer->root, node);
return node->id;
}
int swPipeBase_create(swPipe *p, int blocking)
{
int ret;
swPipeBase *object = sw_malloc(sizeof(swPipeBase));
if (object == NULL)
{
return -1;
}
p->blocking = blocking;
ret = pipe(object->pipes);
if (ret < 0)
{
swWarn("pipe create fail. Error: %s[%d]", strerror(errno), errno);
return -1;
}
else
{
//Nonblock
if(blocking == 0)
{
swSetNonBlock(object->pipes[0]);
swSetNonBlock(object->pipes[1]);
}
p->object = object;
p->read = swPipeBase_read;
p->write = swPipeBase_write;
p->getFd = swPipeBase_getFd;
p->close = swPipeBase_close;
}
return 0;
}
static int swServer_poll_onReceive2(swReactor *reactor, swEvent *event)
{
int ret;
swServer *serv = reactor->ptr;
swFactory *factory = &(serv->factory);
swEventData *buf = sw_malloc(sizeof(swEventData));
if(buf==NULL)
{
swTrace("Malloc fail\n");
return SW_ERR;
}
bzero(buf->data, sizeof(buf->data));
ret = swRead(event->fd, buf->data, SW_BUFFER_SIZE);
if (ret < 0)
{
swTrace("Receive Error.Fd=%d.From=%d\n", event->fd, event->from_id);
return SW_ERR;
}
else if (ret == 0)
{
swTrace("Close Event.FD=%d|From=%d\n", event->fd, event->from_id);
sw_free(buf);
return swServer_close(serv, event);
}
else
{
buf->fd = event->fd;
buf->len = ret;
buf->from_id = event->from_id;
//swTrace("recv: %s|fd=%d|ret=%d|errno=%d\n", buf->data, event->fd, ret, errno);
factory->dispatch(factory, buf);
}
return SW_OK;
}
static long swTimer_add(swTimer *timer, int msec, int interval, void *data)
{
if (interval == 0)
{
return swTimer_addtimeout(timer, msec, data);
}
swTimer_node *node = sw_malloc(sizeof(swTimer_node));
if (node == NULL)
{
swWarn("malloc failed.");
return SW_ERR;
}
bzero(node, sizeof(swTimer_node));
node->interval = msec;
if (gettimeofday(&node->lasttime, NULL) < 0)
{
swSysError("gettimeofday() failed.");
return SW_ERR;
}
if (msec < timer->interval)
{
int new_interval = swoole_common_divisor(msec, timer->interval);
timer->interval = new_interval;
swTimer_set(timer, new_interval);
}
swHashMap_add_int(timer->list, msec, node, NULL);
timer->num++;
return SW_OK;
}
int swTimer_add(swTimer *timer, int ms)
{
swTimer_node *node = sw_malloc(sizeof(swTimer_node));
if (node == NULL)
{
swWarn("swTimer_add malloc fail");
return SW_ERR;
}
bzero(node, sizeof(swTimer_node));
node->lasttime = swTimer_get_ms();
node->interval = ms;
if(ms < timer->interval)
{
int new_interval = swoole_common_divisor(ms, timer->interval);
timer->interval = new_interval;
#if defined(HAVE_TIMERFD) && SW_WORKER_IPC_MODE == 1
swTimer_timerfd_set(timer, new_interval);
#else
swTimer_signal_set(timer, new_interval);
#endif
}
swHashMap_add_int(&timer->list, ms, node);
timer->num++;
return SW_OK;
}
swTimeWheel* swTimeWheel_new(uint16_t size)
{
swTimeWheel *tw = sw_malloc(sizeof(swTimeWheel));
if (!tw)
{
swWarn("malloc(%ld) failed.", sizeof(swTimeWheel));
return NULL;
}
tw->size = size;
tw->current = 0;
tw->wheel = sw_calloc(size, sizeof(void*));
if (tw->wheel == NULL)
{
swWarn("malloc(%ld) failed.", sizeof(void*) * size);
sw_free(tw);
return NULL;
}
int i;
for (i = 0; i < size; i++)
{
tw->wheel[i] = swHashMap_new(16, NULL);
if (tw->wheel[i] == NULL)
{
swTimeWheel_free(tw);
return NULL;
}
}
return tw;
}
int swReactorPoll_create(swReactor *reactor, int max_fd_num)
{
//create reactor object
swReactorPoll *object = sw_malloc(sizeof(swReactorPoll));
if (object == NULL)
{
swError("malloc[0] failed");
return SW_ERR;
}
bzero(object, sizeof(swReactorPoll));
object->fds = sw_calloc(max_fd_num, sizeof(swPollFdInfo));
if (object->fds == NULL)
{
swError("malloc[1] failed");
return SW_ERR;
}
object->events = sw_calloc(max_fd_num, sizeof(struct pollfd));
if (object->events == NULL)
{
swError("malloc[2] failed");
return SW_ERR;
}
object->max_fd_num = max_fd_num;
bzero(reactor->handle, sizeof(reactor->handle));
reactor->object = object;
//binding method
reactor->add = swReactorPoll_add;
reactor->del = swReactorPoll_del;
reactor->set = swReactorPoll_set;
reactor->wait = swReactorPoll_wait;
reactor->free = swReactorPoll_free;
reactor->setHandle = swReactor_setHandle;
return SW_OK;
}
int swPipeUnsock_create(swPipe *p, int blocking, int protocol)
{
int ret;
swPipeUnsock *object = sw_malloc(sizeof(swPipeUnsock));
if (object == NULL)
{
return -1;
}
p->blocking = blocking;
ret = socketpair(PF_LOCAL, protocol, 0, object->socks);
if (ret < 0)
{
return -1;
}
else
{
//Nonblock
if (blocking == 0)
{
swSetNonBlock(object->socks[0]);
swSetNonBlock(object->socks[1]);
}
p->object = object;
p->read = swPipeUnsock_read;
p->write = swPipeUnsock_write;
p->getFd = swPipeUnsock_getFd;
p->close = swPipeUnsock_close;
}
return 0;
}
static int swAioLinux_write(int fd, void *inbuf, size_t size, off_t offset)
{
struct iocb *iocbps[1];
struct iocb *iocbp = sw_malloc(sizeof(struct iocb));
if (iocbp == NULL)
{
swWarn("malloc failed.");
return SW_ERR;
}
bzero(iocbp, sizeof(struct iocb));
iocbp->aio_fildes = fd;
iocbp->aio_lio_opcode = IOCB_CMD_PWRITE;
iocbp->aio_buf = (__u64 ) inbuf;
iocbp->aio_offset = offset;
iocbp->aio_nbytes = size;
iocbp->aio_flags = IOCB_FLAG_RESFD;
iocbp->aio_resfd = swoole_aio_eventfd;
iocbp->aio_reqprio = SwooleAIO.current_id++;
//iocbp->aio_data = (__u64) aio_callback;
iocbps[0] = iocbp;
if (io_submit(swoole_aio_context, 1, iocbps) == 1)
{
SwooleAIO.task_num++;
return iocbp->aio_reqprio;
}
swWarn("io_submit failed. Error: %s[%d]", strerror(errno), errno);
return SW_ERR;
}
int swAio_dns_lookup(void *hostname, void *ip_addr, size_t size)
{
swAio_event *aio_ev = (swAio_event *) sw_malloc(sizeof(swAio_event));
if (aio_ev == NULL)
{
swWarn("malloc failed.");
return SW_ERR;
}
bzero(aio_ev, sizeof(swAio_event));
aio_ev->buf = ip_addr;
aio_ev->req = hostname;
aio_ev->type = SW_AIO_DNS_LOOKUP;
aio_ev->nbytes = size;
aio_ev->task_id = SwooleAIO.current_id++;
if (swThreadPool_dispatch(&swAioBase_thread_pool, aio_ev, sizeof(aio_ev)) < 0)
{
return SW_ERR;
}
else
{
SwooleAIO.task_num++;
return aio_ev->task_id;
}
}
/**
* @brief
* Function to assign a file descriptor and necessary information to a file
* structure inorder to pursue subsequent operations
* @param finfo
* Pointer to a file structure where the file information is stored
* @param entry
* Pointer to the directory entry of the file/directory
* @param mode
* Mode in which the file is requested to be opened
* @return
* File descriptor of the file
*/
int retrieve_file_info(file_info *finfo,dir_entry *entry,u8 mode,
u8 *dir_offset,const char *path)
{
file_info *temp;
if(file_head == NULL)
file_head = finfo;
else{
temp = file_head;
while(temp->next != NULL)
temp = temp->next;
temp->next = finfo;
}
finfo->fd = fdes = fdes + 1;
finfo->file_path = sw_malloc(sizeof(char) * (sw_strlen(path) + 1));
sw_strcpy(finfo->file_path,path);
finfo->entry = entry;
finfo->strt_cluster = (entry->strt_clus_hword)<<16 |
(entry->strt_clus_lword);
finfo->cur_cluster = finfo->strt_cluster;
finfo->cur_offset = 0;
finfo->file_size = entry->size;
finfo->mode = mode;
finfo->bytes_traversed = 0;
finfo->dir_entry_offset = dir_offset;
finfo->next = NULL;
return(finfo->fd);
}
static int swEventTimer_add(swTimer *timer, int _msec, int interval, void *data)
{
swTimer_node *node = sw_malloc(sizeof(swTimer_node));
if (!node)
{
swSysError("malloc(%d) failed.", (int )sizeof(swTimer_node));
return SW_ERR;
}
int now_msec = swEventTimer_get_relative_msec();
if (now_msec < 0)
{
return SW_ERR;
}
node->data = data;
node->exec_msec = now_msec + _msec;
node->interval = interval ? _msec : 0;
if (SwooleG.main_reactor->timeout_msec > _msec)
{
SwooleG.main_reactor->timeout_msec = _msec;
}
swTimer_node_insert(&timer->root, node);
return SW_OK;
}
void* swHeap_push(swHeap *heap, uint64_t priority, void *data)
{
void *tmp;
uint32_t i;
uint32_t newsize;
if (heap->num >= heap->size)
{
newsize = heap->size * 2;
if (!(tmp = sw_realloc(heap->nodes, sizeof(void *) * newsize)))
{
return NULL;
}
heap->nodes = tmp;
heap->size = newsize;
}
swHeap_node *node = sw_malloc(sizeof(swHeap_node));
if (!node)
{
return NULL;
}
node->priority = priority;
node->data = data;
i = heap->num++;
heap->nodes[i] = node;
swHeap_bubble_up(heap, i);
return node;
}
int swReactorKqueue_create(swReactor *reactor, int max_event_num)
{
//create reactor object
swReactorKqueue *reactor_object = sw_malloc(sizeof(swReactorKqueue));
if (reactor_object == NULL)
{
swTrace("[swReactorKqueueCreate] malloc[0] fail\n");
return SW_ERR;
}
reactor->object = reactor_object;
reactor_object->events = sw_calloc(max_event_num, sizeof(struct kevent));
if (reactor_object->events == NULL)
{
swTrace("[swReactorKqueueCreate] malloc[1] fail\n");
return SW_ERR;
}
//kqueue create
reactor_object->event_max = max_event_num;
reactor_object->epfd = kqueue();
if (reactor_object->epfd < 0)
{
swTrace("[swReactorKqueueCreate] kqueue_create[0] fail\n");
return SW_ERR;
}
//binding method
reactor->add = swReactorKqueue_add;
reactor->set = swReactorKqueue_set;
reactor->del = swReactorKqueue_del;
reactor->wait = swReactorKqueue_wait;
reactor->free = swReactorKqueue_free;
reactor->setHandle = swReactor_setHandle;
return SW_OK;
}
int swPipeMsg_create(swPipe *p, int blocking, int msg_key, long type)
{
int msg_id;
swPipeMsg *object = sw_malloc(sizeof(swPipeMsg));
if (object == NULL)
{
return -1;
}
if (blocking == 0)
{
object->ipc_wait = IPC_NOWAIT;
}
else
{
object->ipc_wait = 0;
}
p->blocking = blocking;
msg_id = msgget(msg_key, IPC_CREAT | 0666);
if (msg_id < 0)
{
return -1;
}
else
{
object->msg_id = msg_id;
object->type = type;
p->object = object;
p->read = swPipeMsg_read;
p->write = swPipeMsg_write;
p->getFd = swPipeMsg_getFd;
p->close = swPipeMsg_close;
}
return 0;
}
static int swFactoryProcess_writer_start(swFactory *factory)
{
swFactoryProcess *this = factory->object;
swThreadParam *param;
int i;
pthread_t pidt;
for (i = 0; i < this->writer_num; i++)
{
param = sw_malloc(sizeof(swThreadParam));
if (param == NULL)
{
swTrace("malloc fail\n");
return SW_ERR;
}
param->object = factory;
param->pti = i;
if (pthread_create(&pidt, NULL, (void * (*)(void *)) swFactoryProcess_writer_loop, (void *) param) < 0)
{
swTrace("pthread_create fail\n");
return SW_ERR;
}
this->writers[i].ptid = pidt;
SW_START_SLEEP;
}
return SW_OK;
}
int swReactorEpoll_create(swReactor *reactor, int max_event_num)
{
//create reactor object
swReactorEpoll *reactor_object = sw_malloc(sizeof(swReactorEpoll));
if (reactor_object == NULL)
{
swTrace("[swReactorEpollCreate] malloc[0] fail\n");
return SW_ERR;
}
reactor->object = reactor_object;
reactor_object->events = sw_calloc(max_event_num, sizeof(struct epoll_event));
if (reactor_object->events == NULL)
{
swTrace("[swReactorEpollCreate] malloc[1] fail\n");
return SW_ERR;
}
//epoll create
reactor_object->event_max = 0;
reactor_object->epfd = epoll_create(512);
if (reactor_object->epfd < 0)
{
swTrace("[swReactorEpollCreate] epoll_create[0] fail\n");
return SW_ERR;
}
//binding method
reactor->add = swReactorEpoll_add;
reactor->del = swReactorEpoll_del;
reactor->wait = swReactorEpoll_wait;
reactor->free = swReactorEpoll_free;
reactor->setHandle = swReactor_setHandle;
return SW_OK;
}
int swTimer_add(swTimer *timer, int ms)
{
swTimer_node *node = sw_malloc(sizeof(swTimer_node));
if (node == NULL)
{
swWarn("malloc failed.");
return SW_ERR;
}
bzero(node, sizeof(swTimer_node));
node->lasttime = swTimer_get_ms();
node->interval = ms;
if (ms < timer->interval)
{
int new_interval = swoole_common_divisor(ms, timer->interval);
timer->interval = new_interval;
if (SwooleG.use_timerfd)
{
swTimer_timerfd_set(timer, new_interval);
}
else
{
swTimer_signal_set(timer, new_interval);
}
}
swHashMap_add_int(timer->list, ms, node);
timer->num++;
return SW_OK;
}
swMemoryPool *swRingBuffer_new(size_t size, uint8_t shared)
{
size_t malloc_size = size + sizeof(swRingBuffer) + sizeof(swMemoryPool);
void *mem = (shared == 1) ? sw_shm_malloc(malloc_size) : sw_malloc(malloc_size);
if (mem == NULL)
{
swWarn("malloc(%ld) failed.", size);
return NULL;
}
swRingBuffer *object = mem;
mem += sizeof(swRingBuffer);
bzero(object, sizeof(swRingBuffer));
object->size = size;
object->shared = shared;
swMemoryPool *pool = mem;
mem += sizeof(swMemoryPool);
pool->object = object;
pool->destroy = swRingBuffer_destory;
pool->free = swRingBuffer_free;
pool->alloc = swRingBuffer_alloc;
object->memory = mem;
return pool;
}
static int swFactoryProcess_writer_start(swFactory *factory)
{
swFactoryProcess *object = factory->object;
swThreadParam *param;
int i;
pthread_t pidt;
swThreadStartFunc thread_main;
#if SW_WORKER_IPC_MODE == 2
thread_main = (swThreadStartFunc) swFactoryProcess_writer_loop_queue;
#else
thread_main = (swThreadStartFunc) swFactoryProcess_writer_loop_unsock;
#endif
for (i = 0; i < object->writer_num; i++)
{
param = sw_malloc(sizeof(swPipe));
if (param == NULL)
{
swError("malloc fail\n");
return SW_ERR;
}
param->object = factory;
param->pti = i;
if (pthread_create(&pidt, NULL, thread_main, (void *) param) < 0)
{
swTrace("pthread_create fail\n");
return SW_ERR;
}
pthread_detach(pidt);
object->writers[i].ptid = pidt;
SW_START_SLEEP;
}
return SW_OK;
}
static int swAioGcc_write(int fd, void *inbuf, size_t size, off_t offset)
{
swAio_gcc_t *aiocb = sw_malloc(sizeof(swAio_gcc_t));
if (aiocb == NULL)
{
swWarn("malloc failed.");
return SW_ERR;
}
aiocb->next = NULL;
if (swAioGcc_request == NULL)
{
swAioGcc_request = aiocb;
}
else
{
swAioGcc_request->next = aiocb;
}
bzero(aiocb, sizeof(swAio_gcc_t));
aiocb->aiocb.aio_fildes = fd;
aiocb->aiocb.aio_buf = inbuf;
aiocb->aiocb.aio_nbytes = size;
aiocb->aiocb.aio_lio_opcode = LIO_WRITE;
aiocb->aiocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL;
aiocb->aiocb.aio_sigevent.sigev_signo = SIGIO;
if (aio_write(&aiocb->aiocb) == -1)
{
swWarn("aio_write failed. Error: %s[%d]", strerror(errno), errno);
return SW_ERR;
}
return SW_OK;
}
int swWorker_create(swWorker *worker)
{
/**
* Create shared memory storage
*/
void *store = sw_shm_malloc(SwooleG.serv->buffer_output_size);
if (store == NULL)
{
swWarn("malloc for worker->store failed.");
return SW_ERR;
}
swPipe *worker_notify = sw_malloc(sizeof(swPipe));
if (worker_notify == NULL)
{
swWarn("malloc for worker->notify failed.");
sw_shm_free(store);
return SW_ERR;
}
/**
* Create notify pipe
*/
if (swPipeNotify_auto(worker_notify, 1, 0))
{
sw_shm_free(store);
sw_free(worker_notify);
return SW_ERR;
}
worker->notify = worker_notify;
worker->store.ptr = store;
worker->store.lock = 0;
return SW_OK;
}
swDataBuffer_item* swDataBuffer_newItem(swDataBuffer *data_buffer, int fd, int trunk_size)
{
swDataBuffer_item *newItem = sw_malloc(sizeof(swDataBuffer_item));
//内存分配失败
if (newItem == NULL)
{
swWarn("malloc for newItem failed. Error: %s[%d]", strerror(errno), errno);
return NULL;
}
bzero(newItem, sizeof(swDataBuffer_item));
//创建item时，自动建立一个trunk
swDataBuffer_trunk *newTrunk = swDataBuffer_newTrunk(data_buffer, newItem);
if (newTrunk == NULL)
{
sw_free(newItem);
swWarn("malloc for newTrunk failed. Error: %s[%d]", strerror(errno), errno);
return NULL;
}
newItem->fd = fd;
swHashMap_add_int(&data_buffer->map, fd, newItem);
return newItem;
}